Solution - Long subtraction
508
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 5 | 1 | 0 | |
| - | 2 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (10).
| Place value | hundreds | tens | ones |
| 0 | 10 | ||
| 5 | 1 | 0 | |
| - | 2 | ||
Subtract the numbers in the ones column from the top number:
10-2=8
| Place value | hundreds | tens | ones |
| 0 | 10 | ||
| 5 | 1 | 0 | |
| - | 2 | ||
| 8 |
Write 0 in the tens place.
| Place value | hundreds | tens | ones |
| 0 | 10 | ||
| 5 | 1 | 0 | |
| - | 2 | ||
| 0 | 8 |
Write 5 in the hundreds place.
| Place value | hundreds | tens | ones |
| 0 | 10 | ||
| 5 | 1 | 0 | |
| - | 2 | ||
| 5 | 0 | 8 |
The solution is: 508
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